using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Diamond
{
    class Diamond
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int upperRows = n / 2 + (n % 2); // add 1 or 0 - depending on even/odd
                                             // int firstRow = n / 2;
            string star = "*";

            if (n==1)
            {
                star = "*";
                Console.WriteLine(star);
                return;
            }
            if (n==2)
            {
                star = "**";
                Console.WriteLine(star);
                return;
            }
            string dash = new string('_', (n - star.Length) / 2);

            Console.WriteLine(dash + star + dash);

            for (int row = 0; row < upperRows - 1; row++)
            {
                string middleDashes = new string('_', star.Length + row * 2);
                string sideDashes = new string('_', (n - 2 - middleDashes.Length) / 2);
                Console.WriteLine(sideDashes + "*" + middleDashes + "*" + sideDashes);

            }
            int downRows = n-(n/2+2);// promenena formula
            for (int lastRows = 1; lastRows <= downRows ; lastRows++)
            {
                string sideDashes = new string('_', lastRows);
                string middleDashes = new string('_', (n - sideDashes.Length * 2) - 2);
                Console.WriteLine(sideDashes + "*" + middleDashes + "*" + sideDashes);
            }
            dash = new string('-', (n - star.Length) / 2);

            Console.WriteLine(dash + star + dash);
        }
    }
}